<pre>  /**
   * The constants used in this Content Widget.
   */
  public static interface CwConstants extends Constants {
    String cwTabPanelDescription();

    String cwTabPanelName();

    String cwTabPanelTab0();

    String cwTabPanelTab2();

    String[] cwTabPanelTabs();
  }

  /**
   * An instance of the constants.
   */
  private final CwConstants constants;

  /**
   * Initialize this example.
   */
  @Override
  public Widget onInitialize() {
    // Create a tab panel
    TabLayoutPanel tabPanel = new TabLayoutPanel(2.5, Unit.EM);
    tabPanel.setAnimationDuration(1000);
    tabPanel.getElement().getStyle().setMarginBottom(10.0, Unit.PX);

    // Add a home tab
    String[] tabTitles = constants.cwTabPanelTabs();
    HTML homeText = new HTML(constants.cwTabPanelTab0());
    tabPanel.add(homeText, tabTitles[0]);

    // Add a tab with an image
    SimplePanel imageContainer = new SimplePanel();
    imageContainer.setWidget(new Image(Showcase.images.gwtLogo()));
    tabPanel.add(imageContainer, tabTitles[1]);

    // Add a tab
    HTML moreInfo = new HTML(constants.cwTabPanelTab2());
    tabPanel.add(moreInfo, tabTitles[2]);

    // Return the content
    tabPanel.selectTab(0);
    tabPanel.ensureDebugId("cwTabPanel");

    return tabPanel;
  }

</pre>